HELEOMYZID FLIES NORTH OF MEXICO—GILL 581 
with brownish tinge and slight clouding at the ends of 1 or more of 
the longitudinal veins; abdomen yellowish orange to brownish. 
Lreneto—6.0-7.0 mm. 
DistRiBuUTION.—British Columbia, Washington, Oregon, California, 
Wyoming, Manitoba, Minnesota, Michigan, Ontario, Quebec, Lab- 
rador, New York, New Hampshire; June—November. 
Amoebaleria confusa (Wahlgren) 
Figure 77 
Helomyza longiseta Zetterstedt, 1847, p. 2245 (part). 
Helomyza confusa Wahlgren, 1918, p. 6. 
Chaetomus confusus (Wahlgren), Czerny, 1924, p. 129; 1927a, p. 39; 1933, p. 238.— 
Collin, 1943, p. 246. 
This species was reported from California by Czerny (19383). 
Czerny apparently did not utilize the structure of the male termi- 
nalia in making determinations, so this record may be open to question. 
I have not seen any North American specimens of this species. 
Dr. Willi Hennig sent a specimen of each sex from Europe. These 
specimens were very similar to Amoebaleria flavotestacea (Zetterstedt), 
except as follows: only 1 sternopleural bristle; legs with 1 bristle 
(2 on one side only in the female specimen) near distal end on antero- 
dorsal side of hind femur; wings with faint brownish tinge, but no 
distinct clouding at the end of longitudinal veins or along posterior 
crossvein. 
The male terminalia of A. confusa (Wahlgren) are distinct from 
A. flavotestacea (Zetterstedt). 
The cheek-eye ratio is about 0.5, which will help distinguish this 
species from perplexa. 
Lrneru.—4.5-6.5 mm. (Czerny, 1924, p. 130). 
Distrisution.—Humbolt, Calif. 
Amoebaleria triangulata Garrett 
FiacurRE 78 
Amoebaleria triangulata Garrett, 1925a, p. 4—Czerny, 1930, p. 448. 
I have examined the holotype male and the allotype of this species 
in the Garrett collection. I have also seen a paratype male which 
I obtained from Mr. Garrett. 
Matz AND FEMALE.—Front orange, remainder of head yellow, but 
ocellar triangle, frontal plates, and back of head with grayish pol- 
linosity; a single row of buccal setae; cheek-eye ratio about 0.45. 
Thorax yellowish orange, darker on mesonotum; sternopleuron 
with 1 bristle in upper hind corner and setae down the middle to 
the longer hairs between the coxae, but the anterior third.of the 
